Yes, even if you don't buy the MagSafe case, your iPhone 12 can still be charged wirelessly. The iPhone 12 series has a built-in wireless charging function that supports the Qi standard wireless charging technology.
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Wireless charging is a way of charging that transmits electrical energy to a device through electromagnetic induction, without the need to use a traditional charging cable connection. As long as your iPhone 12 is placed on a charger or charging pad that supports Qi wireless charging, it can start charging.
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The MagSafe case is designed to better fit MagSafe charging technology, providing a stronger magnetic adsorption that aligns the iPhone 12 better with the MagSafe charger for a more efficient charging experience. However, even without the MagSafe case, you can still charge your iPhone 12 using a regular Qi wireless charger.
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Please note that in order to achieve the best wireless charging results, it is recommended that you use a certified charger and charging pad that comply with the Qi standard, and ensure that the iPhone 12 is properly placed on the charger to ensure charging efficiency and stability.
Yes, you can buy other wireless chargers besides magsafe.